Examples with RpcException org.apache.dubbo.rpc.RpcException used on opensource projects

Example 21 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class MockClusterInvoker method invoke.

@Override
public Result invoke(Invocation invocation) throws RpcException {
    Result result = null;
    String value = getUrl().getMethodParameter(invocation.getMethodName(), MOCK_KEY, Boolean.FALSE.toString()).trim();
    if (value.length() == 0 || "false".equalsIgnoreCase(value)) {
        // no mock
        result = this.invoker.invoke(invocation);
    } else if (value.startsWith("force")) {
        if (logger.isWarnEnabled()) {
            logger.warn("force-mock: " + invocation.getMethodName() + " force-mock enabled , url : " + getUrl());
        }
        // force:direct mock
        result = doMockInvoke(invocation, null);
    } else {
        // fail-mock
        try {
            result = this.invoker.invoke(invocation);
            // fix:#4585
            if (result.getException() != null && result.getException() instanceof RpcException) {
                RpcException rpcException = (RpcException) result.getException();
                if (rpcException.isBiz()) {
                    throw rpcException;
                } else {
                    result = doMockInvoke(invocation, rpcException);
                }
            }
        } catch (RpcException e) {
            if (e.isBiz()) {
                throw e;
            }
            if (logger.isWarnEnabled()) {
                logger.warn("fail-mock: " + invocation.getMethodName() + " fail-mock enabled , url : " + getUrl(), e);
            }
            result = doMockInvoke(invocation, e);
        }
    }
    return result;
}

Example 22 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class MockClusterInvoker method doMockInvoke.

@SuppressWarnings({ "unchecked", "rawtypes" })
private Result doMockInvoke(Invocation invocation, RpcException e) {
    Result result = null;
    Invoker<T> minvoker;
    List<Invoker<T>> mockInvokers = selectMockInvoker(invocation);
    if (CollectionUtils.isEmpty(mockInvokers)) {
        minvoker = (Invoker<T>) new MockInvoker(getUrl(), directory.getInterface());
    } else {
        minvoker = mockInvokers.get(0);
    }
    try {
        result = minvoker.invoke(invocation);
    } catch (RpcException me) {
        if (me.isBiz()) {
            result = AsyncRpcResult.newDefaultAsyncResult(me.getCause(), invocation);
        } else {
            throw new RpcException(me.getCode(), getMockExceptionMessage(e, me), me.getCause());
        }
    } catch (Throwable me) {
        throw new RpcException(getMockExceptionMessage(e, me), me.getCause());
    }
    return result;
}

Example 23 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class ThriftCodec method decode.

private Object decode(TProtocol protocol) throws IOException {
    // version
    String serviceName;
    String path;
    long id;
    TMessage message;
    try {
        protocol.readI16();
        protocol.readByte();
        serviceName = protocol.readString();
        path = protocol.readString();
        id = protocol.readI64();
        message = protocol.readMessageBegin();
    } catch (TException e) {
        throw new IOException(e.getMessage(), e);
    }
    if (message.type == TMessageType.CALL) {
        RpcInvocation result = new RpcInvocation();
        result.setAttachment(INTERFACE_KEY, serviceName);
        result.setAttachment(PATH_KEY, path);
        result.setMethodName(message.name);
        String argsClassName = ExtensionLoader.getExtensionLoader(ClassNameGenerator.class).getExtension(ThriftClassNameGenerator.NAME).generateArgsClassName(serviceName, message.name);
        if (StringUtils.isEmpty(argsClassName)) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, "The specified interface name incorrect.");
        }
        Class clazz = CACHED_CLASS.get(argsClassName);
        if (clazz == null) {
            try {
                clazz = ClassUtils.forNameWithThreadContextClassLoader(argsClassName);
                CACHED_CLASS.putIfAbsent(argsClassName, clazz);
            } catch (ClassNotFoundException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
        }
        TBase args;
        try {
            args = (TBase) clazz.newInstance();
        } catch (InstantiationException | IllegalAccessException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
        try {
            args.read(protocol);
            protocol.readMessageEnd();
        } catch (TException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
        List<Object> parameters = new ArrayList<>();
        List<Class<?>> parameterTypes = new ArrayList<>();
        int index = 1;
        while (true) {
            TFieldIdEnum fieldIdEnum = args.fieldForId(index++);
            if (fieldIdEnum == null) {
                break;
            }
            String fieldName = fieldIdEnum.getFieldName();
            String getMethodName = ThriftUtils.generateGetMethodName(fieldName);
            Method getMethod;
            try {
                getMethod = clazz.getMethod(getMethodName);
            } catch (NoSuchMethodException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
            parameterTypes.add(getMethod.getReturnType());
            try {
                parameters.add(getMethod.invoke(args));
            } catch (IllegalAccessException | InvocationTargetException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
        }
        result.setArguments(parameters.toArray());
        result.setParameterTypes(parameterTypes.toArray(new Class[0]));
        Request request = new Request(id);
        request.setData(result);
        CACHED_REQUEST.putIfAbsent(id, RequestData.create(message.seqid, serviceName, message.name));
        return request;
    } else if (message.type == TMessageType.EXCEPTION) {
        TApplicationException exception;
        try {
            exception = TApplicationException.readFrom(protocol);
            protocol.readMessageEnd();
        } catch (TException e) {
            throw new IOException(e.getMessage(), e);
        }
        AppResponse result = new AppResponse();
        result.setException(new RpcException(exception.getMessage()));
        Response response = new Response();
        response.setResult(result);
        response.setId(id);
        return response;
    } else if (message.type == TMessageType.REPLY) {
        String resultClassName = ExtensionLoader.getExtensionLoader(ClassNameGenerator.class).getExtension(ThriftClassNameGenerator.NAME).generateResultClassName(serviceName, message.name);
        if (StringUtils.isEmpty(resultClassName)) {
            throw new IllegalArgumentException("Could not infer service result class name from service name " + serviceName + ", the service name you specified may not generated by thrift idl compiler");
        }
        Class<?> clazz = CACHED_CLASS.get(resultClassName);
        if (clazz == null) {
            try {
                clazz = ClassUtils.forNameWithThreadContextClassLoader(resultClassName);
                CACHED_CLASS.putIfAbsent(resultClassName, clazz);
            } catch (ClassNotFoundException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
        }
        TBase<?, ? extends TFieldIdEnum> result;
        try {
            result = (TBase<?, ?>) clazz.newInstance();
        } catch (InstantiationException | IllegalAccessException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
        try {
            result.read(protocol);
            protocol.readMessageEnd();
        } catch (TException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
        Object realResult = null;
        int index = 0;
        while (true) {
            TFieldIdEnum fieldIdEnum = result.fieldForId(index++);
            if (fieldIdEnum == null) {
                break;
            }
            Field field;
            try {
                field = clazz.getDeclaredField(fieldIdEnum.getFieldName());
                ReflectUtils.makeAccessible(field);
            } catch (NoSuchFieldException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
            try {
                realResult = field.get(result);
            } catch (IllegalAccessException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
            if (realResult != null) {
                break;
            }
        }
        Response response = new Response();
        response.setId(id);
        AppResponse appResponse = new AppResponse();
        if (realResult instanceof Throwable) {
            appResponse.setException((Throwable) realResult);
        } else {
            appResponse.setValue(realResult);
        }
        response.setResult(appResponse);
        return response;
    } else {
        // Impossible
        throw new IOException();
    }
}

Example 24 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class ThriftCodec method encodeResponse.

private void encodeResponse(Channel channel, ChannelBuffer buffer, Response response) throws IOException {
    AppResponse result = (AppResponse) response.getResult();
    RequestData rd = CACHED_REQUEST.get(response.getId());
    String resultClassName = ExtensionLoader.getExtensionLoader(ClassNameGenerator.class).getExtension(channel.getUrl().getParameter(ThriftConstants.CLASS_NAME_GENERATOR_KEY, ThriftClassNameGenerator.NAME)).generateResultClassName(rd.serviceName, rd.methodName);
    if (StringUtils.isEmpty(resultClassName)) {
        throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, "Could not encode response, the specified interface may be incorrect.");
    }
    Class clazz = CACHED_CLASS.get(resultClassName);
    if (clazz == null) {
        try {
            clazz = ClassUtils.forNameWithThreadContextClassLoader(resultClassName);
            CACHED_CLASS.putIfAbsent(resultClassName, clazz);
        } catch (ClassNotFoundException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
    }
    TBase resultObj;
    try {
        resultObj = (TBase) clazz.newInstance();
    } catch (InstantiationException | IllegalAccessException e) {
        throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
    }
    TApplicationException applicationException = null;
    TMessage message;
    if (result.hasException()) {
        Throwable throwable = result.getException();
        int index = 1;
        boolean found = false;
        while (true) {
            TFieldIdEnum fieldIdEnum = resultObj.fieldForId(index++);
            if (fieldIdEnum == null) {
                break;
            }
            String fieldName = fieldIdEnum.getFieldName();
            String getMethodName = ThriftUtils.generateGetMethodName(fieldName);
            String setMethodName = ThriftUtils.generateSetMethodName(fieldName);
            Method getMethod;
            Method setMethod;
            try {
                getMethod = clazz.getMethod(getMethodName);
                if (getMethod.getReturnType().equals(throwable.getClass())) {
                    found = true;
                    setMethod = clazz.getMethod(setMethodName, throwable.getClass());
                    setMethod.invoke(resultObj, throwable);
                }
            } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
                throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
            }
        }
        if (!found) {
            applicationException = new TApplicationException(throwable.getMessage());
        }
    } else {
        Object realResult = result.getValue();
        // result field id is 0
        String fieldName = resultObj.fieldForId(0).getFieldName();
        String setMethodName = ThriftUtils.generateSetMethodName(fieldName);
        String getMethodName = ThriftUtils.generateGetMethodName(fieldName);
        Method getMethod;
        Method setMethod;
        try {
            getMethod = clazz.getMethod(getMethodName);
            setMethod = clazz.getMethod(setMethodName, getMethod.getReturnType());
            setMethod.invoke(resultObj, realResult);
        } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
            throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
        }
    }
    if (applicationException != null) {
        message = new TMessage(rd.methodName, TMessageType.EXCEPTION, rd.id);
    } else {
        message = new TMessage(rd.methodName, TMessageType.REPLY, rd.id);
    }
    RandomAccessByteArrayOutputStream bos = new RandomAccessByteArrayOutputStream(1024);
    TIOStreamTransport transport = new TIOStreamTransport(bos);
    TBinaryProtocol protocol = new TBinaryProtocol(transport);
    int messageLength;
    int headerLength;
    byte[] bytes = new byte[4];
    try {
        // magic
        protocol.writeI16(MAGIC);
        // message length
        protocol.writeI32(Integer.MAX_VALUE);
        // message header length
        protocol.writeI16(Short.MAX_VALUE);
        // version
        protocol.writeByte(VERSION);
        // service name
        protocol.writeString(rd.serviceName);
        // id
        protocol.writeI64(response.getId());
        protocol.getTransport().flush();
        headerLength = bos.size();
        // message
        protocol.writeMessageBegin(message);
        switch(message.type) {
            case TMessageType.EXCEPTION:
                applicationException.write(protocol);
                break;
            case TMessageType.REPLY:
                resultObj.write(protocol);
                break;
            default:
        }
        protocol.writeMessageEnd();
        protocol.getTransport().flush();
        int oldIndex = messageLength = bos.size();
        try {
            TFramedTransport.encodeFrameSize(messageLength, bytes);
            bos.setWriteIndex(MESSAGE_LENGTH_INDEX);
            protocol.writeI32(messageLength);
            bos.setWriteIndex(MESSAGE_HEADER_LENGTH_INDEX);
            protocol.writeI16((short) (0xffff & headerLength));
        } finally {
            bos.setWriteIndex(oldIndex);
        }
    } catch (TException e) {
        throw new RpcException(RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e);
    }
    buffer.writeBytes(bytes);
    buffer.writeBytes(bos.toByteArray());
}

Example 25 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class ThriftInvoker method doInvoke.

@Override
protected Result doInvoke(Invocation invocation) throws Throwable {
    RpcInvocation inv = (RpcInvocation) invocation;
    final String methodName;
    methodName = invocation.getMethodName();
    inv.setAttachment(PATH_KEY, getUrl().getPath());
    // for thrift codec
    inv.setAttachment(ThriftCodec.PARAMETER_CLASS_NAME_GENERATOR, getUrl().getParameter(ThriftCodec.PARAMETER_CLASS_NAME_GENERATOR, DubboClassNameGenerator.NAME));
    ExchangeClient currentClient;
    if (clients.length == 1) {
        currentClient = clients[0];
    } else {
        currentClient = clients[index.getAndIncrement() % clients.length];
    }
    try {
        int timeout = getUrl().getMethodParameter(methodName, TIMEOUT_KEY, DEFAULT_TIMEOUT);
        ExecutorService executor = getCallbackExecutor(getUrl(), inv);
        CompletableFuture<AppResponse> appResponseFuture = currentClient.request(inv, timeout, executor).thenApply(obj -> (AppResponse) obj);
        // save for 2.6.x compatibility, for example, TraceFilter in Zipkin uses com.alibaba.xxx.FutureAdapter
        FutureContext.getContext().setCompatibleFuture(appResponseFuture);
        AsyncRpcResult result = new AsyncRpcResult(appResponseFuture, invocation);
        result.setExecutor(executor);
        return result;
    } catch (TimeoutException e) {
        throw new RpcException(RpcException.TIMEOUT_EXCEPTION, e.getMessage(), e);
    } catch (RemotingException e) {
        throw new RpcException(RpcException.NETWORK_EXCEPTION, e.getMessage(), e);
    }
}